Which retailer was the first to implement the "scan-and-go" technology that allows shoppers to scan products with their smartphones and skip traditional checkout lines?

The retail landscape has transformed dramatically in recent decades, with certain companies leading revolutionary changes in how we shop. These innovators have introduced technologies and strategies that redefined consumer expectations and shopping experiences worldwide. This trivia tests your knowledge about a significant retail innovation that changed the industry forever. Do you know which company pioneered this game-changing retail concept?

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Walmart (with Walmart Scan & Go in 2012)
Amazon (with Amazon Go in 2016)
Target (with Target Skip-the-Line in 2014)
Kroger (with Kroger Scan, Bag, Go in 2015)